M265634 捌、新型說明： 【新型所屬之技術領域】 本創作一般係關於擴散反射顯示器，例如電泳（E_ink)顯 示器及Nanomat，由於其物理特徵，因此亦常常將其稱為来員 紙式顯示器。 【先前技術】 在低壞境光位準’具有一反射特徵之一顯示需要一前 光來照射該顯示器。傳統的反射顯示器，例如LCD，需要 該照明光以與該顯示器表面成接近直角之角度而到達該顯 示器表面。由於不能將該光源直接放置於該表面上，而必 須將其定位至該顯示器之側，因此，已開發_透明導光板， 以將該導光板定位於該顯示器表面上（前方）而將該光引導 及重新導向該顯示器上。為獲得一良好的光分佈及方向， 導光板已具有微結構，例如在其前表面處之鋸齒狀微結 構。該等微結構必須為高品質，而對其製造提出高要长 擴散反射顯示器之引入放鬆了對該前光之導光板之要 求，因為其允許該照明光與該顯示器表面成一較大角度而 到達該顯示器表面。此優點已觸發對容易製造的簡單楔形 導光板之開發。EP 1 220 015中顯示此類楔形導光板，儘管 對於一反射型LCD，其具有嵌入於該顯示器内之一複=的 額外反射器板，以便模擬一更為擴散反射之特徵，此特徵 使知可能使用一模形導光板。但是，該些楔形導光板具有 -些缺I卜首先’當欲照射較大顯示器或需要較大模:角 度時，此類導光板在面對該光源之端將越來越厚而且重到 92979.doc M265634 不合需要的程度。除厚度及重量問題外，還阻止該前光與 其他零件之整合。進—步’在使用—簡單楔形時不能調譜 該照明之均勻度。 【新型内容】 本創作之目的係提供一種擴散反射顯示器裝置，其消除 上文所說明之前光缺點並提供用於將一實質上均勻之厚度 與放氣、之品質要求以及與—可調敎照明均句度組合起來 之一前光。 藉由如申請專利範圍第1項之顯示器裝置來實現該目的。 2此依據本創作之一方面，提供一種顯示器裝置，其 包含：-擴散反射顯示器面板；_前光，其包含一導光板 乂及配置於該導光板之—第—端並發射經由該第—端進入 X導，板的光之一光源；以及一透明中間層，其配置於該 顯不器面板之一前表面與該導光板之一後表面之間，以使 得該顯示器面板與該導光板光學接觸。該導光板之後表面 具有包含楔形刻面之_微結構，該等楔形刻面之配置使得 對於每-楔形刻面，該楔形刻面之—第—邊緣與該顯示器 面板之該前表面之間的距離比該楔形刻面之一第二邊緣與 ° “貝不态面板之該前表面之間的距離更短，其中該第一邊 緣係定位成比該第二邊緣更靠近該光源。 、稱明光予接觸」為熟習此項技術者所熟知並係定義 ?士不同透明材料之間的物理接觸，該物理接觸引起牛頓 %、貝驗之零條紋或暗紋。此發生於該等不同材料之折射率 有充分小之差異之情況下。「楔形刻面」表示向該導光板之 92979.doc M265634 -中心平面傾斜而使得可將言亥導光板之定義該刻面的一部 分視為楔形之-刻面。下面將對此作透徹例示。藉由在該 導光板之後表面或底部形成包含楔形刻面之一微結構並藉 由該中間透明層將該微結構與該顯示器面板光學連接，來 有利地使用該擴散反射顯示器之光擴散特性。進一步，該 微結構之光學品質不必像在該導光板之前表面或頂部提供 該微結構時一樣高。此外，該導光板作為一整體不必為楔 形，從而消除上面所說明之大尺寸顯示器之問題。但是， 在本創作之範疇内，若需要，卻可使該導光板之前表面與 该顯示器面板之前表面非平行。本創作之顯示器裝置之另 一優點係，該微結構並不曝露於周圍環境，若曝露於周圍 環境便會使得該頂部易受灰塵微粒、塗抹物、刮擦物件等 的影響。進一步，該顯示器與該導光板之檄結構之間的光 學接觸減少由於可能發生的不鋒利邊緣、刮擦物或其他不 規則性所致的光散射。因此，該光學接觸產生一更佳的整 體顯示器性能。 在EP 1 220 015中，確實顯示在該導光板之後表面上具有 一据齒形圖案之一導光板之一項具體實施例。但是，此先 前技術文件基本上係關於LCD，而特定言之係關於_ Lcd 之一經修改變化（如上文所提到），該變化並不意味著一簡單 結構與一擴散反射顯示器之組合。 依據該顯示器裝置之一項具體實施例，在該導光板之第 一端與一第二端之間（該第二端與該第一端相對），沿該導光 板之後表面連續配置該等楔形刻面。依據此項具體實施 92979.doc M265634 =有利於_均句照明之—方式配置該等楔形刻面。 來=顯:器裝置之—項具體實施例，藉由-連接表面 之該r:: 形刻面，該連接表面與該顯示器面板 之第:』邊续$千仃。換言之，每一連接表面從-楔形刻面 遠：：邊緣延伸至-連續楔形刻面之第-邊緣。由於該等 =表面與該等楔形刻面定向相結合而非平行，因此沒有 目ナ中該些表面。因此，僅藉由該等楔形刻面來實行光 向卜轉σ。因此，該等連接表面之整理甚至將不太重要。 來Τ 4置之—項具體實施例，藉由—連接表面 柄個相鄰楔形刻面，該連接表面由與該顯示器面 ^該雨表面平行之一第一部分以及與該顯示器面板之該 面非平订之-第二部分組&。在此項具體實施例中， =平刀’该等楔形刻面在某種程度上彼此更加分 乂表不可容易調諧地該等楔形刻面之間距 點以便進-步提高該照明之均勾度。 =該顯示器裝置之一項具體實施例，至少一模形刻面 、通一孩第一端之距離而變化。此提供用於調諧該照明 之進一步可能性。 二依：該顯示器裝置之一項具體實施例，從由楔形角度、 -連續連接表面之間的距離以及該楔形間距組成之一楔形 ，面特性群組中選出該至少一楔形刻面特性。在此項具體 =例中’右干特性可能用於精細化該顯示器面板上之照 佈例如，此項具體實施例有能力藉由改變該等特性 ，更夕特丨生而利用该等楔形刻面之一適當定位及成形 92979.doc M265634 來獲得該向外_合料之—梯度。 康^ ·、、、員示态裝置之一項具體實施例，該至少一楔形刻 面特14從該第_端朝該第二端增加。此項具體實施例定義 改變該（等）特性之一方式。 依據忒顯不為之具體實施例，該第一端之一端表面包含 ，料光板之一前表面非垂直之一第一刻s，或該端表面 還包3鄰近該第一刻面之一第二刻面，其中該等第一與第 刻面形成沿該端表面延伸之一 v形溝槽。在此等具體實施 例中，修改該導光板之光人口。從而，該些具體實施例提 供對光向内耦合進入該導光板之一改進，該改進目的在於 有利於一均勻照明。 依據該顯示器裝置之一項具體實施例，該中間層係一黏 合劑。由於容易製造該黏合劑且由於該黏合劑容易填滿該 導光板内由於該微結構而獲得之腔，因此為獲得該中間層 而在該導光板與該顯示器面板之間施加一黏合劑係有利。 依據該顯示器裝置之一項具體實施例，其進一步包含一 觸控螢幕與H明中間層，該第二透明中間層係配置 於該觸控螢幕與該導光板之一前表面之間而使該觸控螢幕 光學接觸該導光板。此項具體實施例將用於該基本顯示器 結構之創作概念延伸到觸控螢幕，即主動顯示器，其中將 在該顯示器上進行輸入。此引起對先前技術之觸控螢幕之 對比及其他特性之一明顯改進。 依據該顯示器裝置之一項具體實施例，該第二透明中間 層具有比該第一透明中間層之折射率更低之一折射率。， 92979.doc -10- M265634 等第與第—中間層之折射率之間的關係防止來自該光源 之光汽漏進人該觸控營幕，⑯而該光僅朝該顯示器面板而 向外I馬合。 【實施方式】 圖1顯示一先前技術之顯示器裝置10。其包含一顯示器面 板11以及由一光源12與一導光板13組成之一前光。該顯示 器面板係一擴散反射類型，藉由擴展於一大視角之反射光 線來說明此類型顯示器面板。該導光板13係楔形，而使得 該導光板之Γ前表面16與該導光板之一後表面17非平行或 朝該後表面17傾斜。該後表面面對該顯示器面板丨丨。該光 源定位於該導光板13之一第一較厚端14，而該導光板13之 厚度隨著與該光源之距離增大而減小，直至該導光板13之 第一較薄端15(其與該第一端14相對）。從該光源發出的光經 由忒第一端14進入該導光板13並沿該導光板而傳播，如圖i 中之光線所說明。在該傳播期間，由該導光板13之前表 面16與後表面17交替反射該光線。由於該傾斜前表面16， 對於由該前表面16所作之每一反射，朝該後表面17之光線 入射角度增大。最後，該入射角度超過全反射之一上限， 而該光線或至少其一部分經由該後表面17而向外耦合並射 中该顯不器面板丨丨。該顯示器面板丨丨經由該導光板而以一 相對分佈或擴展之方式來反射該光並將其反射出去而進入 一觀察者所處之周圍空氣中，在圖式中以一示意性的眼睛 18來表示該觀察者。該顯示器面板11與該導光板13之間的 介面（一薄中間層）係空氣，其以一不合需要之方式影響該向 92979.doc -11 - M265634 外耦合角度。 在依據本創作的顯示器 中，如圖2所示，—……二弟-項具體實施例 人… 占 益面板21與-導光板23利用由一黏 Γ 層29而接合。該導光板23具有-後表面 該後表面具有楔形刻面28之-微結構。下面將進-步 解說該微結構。該巾間層29提供科光板2取特定+之 該等楔形制28)與該顯示器面板21之間的光學接觸^黏 合劑29較佳係一液體膠水，豆 ^ 八今易且均勻地填充該微結構 之腔而不留7任何截留於中間層29與該導光板23之後表面 27之間的空氣。該導光板23具有一般的方塊形狀，其中該 導先板23之前表面26與該顯示器面板。之前表面平行，而 用於該導光板23之後表面27之—幾何基本平面亦與與該顯 不益面板21之前表面平行，儘管在此項具體實施例中，由 於該等楔形刻面28而有少數事實上位於該平面中的、此後 表面27之表面部分。 該中間層29之折射率應低於料光板此折射率。該中 間層29之折射率可調整，以便促進一均句照明，而且，一 般此舉會引起比該導光板23之折射率實質上更低之一折射 率。因此，該中間層29亦稱為低折射率層。 如圖2所示，經由該導光板23傳播並反射在該導光板之一 第一端24處從該光源22引入該導光板23之一例示光線。在 該導光板23之後表面27處之楔形刻面28朝該第一端^傾 斜。由於該等楔形刻面28,對於背對一楔形刻面28之每一 反射，朝該楔形刻面28之入射角度增大，直至該光線超過 92979.doc -12- M265634 該完全反射角度。 - 在圖3中’以圖2中所示的導光板之一部分之一進一步放 — 大側視圖來顯示該微結構。在該導光板23之第一端24與第 二端25之間串聯（即連續）配置該等楔形刻面34a、34b及 34c。每一楔形刻面34a至c均傾斜而使得該刻面34a至c之最 靠近該光源的一第一端35a至c位於比該刻面34a至c之一第 一鈿36a至b離該前表面％一更大距離處。因此，在該導光 板23之一局部區域，該刻面34a至e將一楔形刻面提供給該 ‘光板23。,二個相鄰楔形刻面34&與341)/341)與34(；均藉由 一連接表面37a至b而連接，該連接表面與該顯示器面板以 之前表面26非平行，且與該導光板23之第一端以處之一端 表面32亦非平行’该端表面32進而垂直於該前表面％。因 此，一楔形刻面34aSc之每一第二端36&至1)均藉由此類連 接表面而連接至一連續楔形刻面34&至〇之一相鄰第一端 35a至c。在此項具體實施例中，該連接表面37a至b幾乎垂 直於該等楔形刻面34a至c，儘管其形成與該等楔形刻面— 至c之-純角'。從圖3顯而易見’此舉導致該等連接表面3乃 至b不包括於光之向外_合中’因此’其形狀及表面整理不 重要f列h其不必為平面而可能為凸形或凹形（若該形 狀有助於該微結構之製造或增強該微結構之一些特性 話）。 一、 圖4顯示該顯示器裝置之一黛- 心弟一項具體實施例。在此項且 體實施例中，該微結構不同。更牯 J更特疋s之，在該導光板43 之後表面處之楔形刻面48進一步相互八雜 ^ /不目互为離。母二個相鄰楔 92979.doc -13· M265634 形刻面4 8藉由一遠拉矣而品、当4 、，遷接表面而連接，該連接表面由與該顯示 裔面板41之别表面非平并 穿 . 回非十仃之弟一部分44以及與該顯示器 波置41之刖表面平行之一第二部分45組成。更特定言之， 在此項具體實施财，對於每—連接表面，鮮—部分44 垂直於該導光板43之前表面46並從前—楔形刻㈣之第二 端48b向下延伸至該導光板43之後表面47之幾何平面。該第 二部分45在該幾何平面内從該第—部分44延伸至—連續模 形刻面48之第-端48a。該等第二部㈣之延伸約與該等楼 形刻面4 8之延伸相同。 由於該光源必須定位於該導光板之—端，因此難以獲得 該顯示器面板之一均勻照明。依據本創作，可以一方式調 適該微結構從而補償該光源之側安裝1等楔形刻面有若 干不同特性，料純可依據個別楔關面與該絲相關 之位置而調整。-主要因素係從__個別楔形刻面至該光源 之距離’尤其係在該光之傳播方向上所測量之距離。特別 感興趣之楔形刻面特性為該楔形角度、楔形長度、二連續 連接表面之間的距離以及該楔形間距。楔形角度表示-楔 形刻面相對於該導光板之後表面之幾何平面之傾斜角度， 如圖3中的a所指示。楔开名M _ 間距表示從該幾何平面至該楔形 刻面之第二端之垂直距離。 依據圖5及圖6所示的顯示器裝置之具體實施例，該等基 本部分，即該光源52/62、言亥導光板53/63、該中間層59/69 以及該顯示器面板51/61，類似於該第一項具體實施例之該 些基本部分’而該楔形角度隨與該光源52/62之距離而增 92979.doc > 14. M265634 加。在圖5所示之一第三項具體實施例中，該微結構基本上 =似於該第—項具體實施例之微結構。但是，當該模形角 冒：時，由於每一楔形刻面58之長度，即該楔形刻面％ 之第：與第二端58a、58b之間的距離相同，因此該楔形間 距亦增加，且該等連接表面59之尺寸亦增加。進一步，二 j績連接表面之間的長度隨與該光源52之距離而減小。該 等連接表面59之傾斜度不變。在圖6所示之一第四項具體^ :例中’該微結構基本上類似於該第二項具體實施例之微 結構。剛才？斤述關於該第三項具體實施例之内容對於該第 四：具體貪施例同樣適用。但是，當在該導光板之後表面 之幾何平面㈣伸之所有第三部分尺寸相 W之可變尺寸限於其第-部分64之__變化。當然4^ 多其他的特性調整組合亦引起照明或一些其他參數之一所 需改進。 圖7顯示本創作之顯示器裝置之一第五項具體實施例。此 員二體貫;^例包含·一顯示器面板7丨，包含一光源與一 導光板73之二前光，將該導光板光學連接至該顯示器面板 71之第一中間層74，一觸控螢幕75，以及將該觸控螢幕 75光學連接至該導光板乃之一第二中間層％。藉由對該第 一中間層76、該導光板73及該第一中間層％之折射率進行 適田垃擇，光僅將在該顯示器面板側上而非在該觸控螢 幕側上向"玄别光外耦合。若該第一中間層74、該第二中間 層76以及名V光板73之折射率分別為〜、n2以及n3，則其相 互關係應為η2<ηι<η3。從而，該第二中間層％應具有最低折 92979.doc -15- M265634 二J該導光板73應具有最高折射率。較佳的係，該第 曰之折射率應明顯高於該第二中間層76之折射率， 例如m選擇為該導光板與該第二中間層之折射率之 =。—中間層74與76較佳為黏合劑，例如，uv可固化 丙烯酸或可熱固化環氧。 了口化 為進一步改進該照明特性，在圖8所示之一第六項且體實 “ —以V先板83之第一端表面84，即該光源82所 =之光人口端表面。換言之’該第-端表面84之至少一部 :傾斜而使!寻其與相對的第二端表面85非平行。因此，該 二刀/、忒導光板83之前表面86非垂直。依據此第六項具體 貫施例，有一第一或上部刻面84a與鄰接該第一刻面84a之 一第二或下部刻面84b。該等第一與第二刻面8仏、b形成沿 遠光入口端表面84延伸（即與該光源82之中心軸平行）之一 v形溝槽。該等第一與第二刻面84a、84b尺寸約相等，而使 付忒溝槽底部約位於該導光板83之前與後表面86、87之中 間。 依據苐七項具體實施例，如圖9所示，所刻晝之入口端 表面包含一第一或上部刻面94a，該刻面從該導光板93之前 表面96朝該導光板93之後表面97延伸並佔據該第一端表面 94之一主要部分。在此項具體實施例中，該第一刻面94a以 與先前所說明之具體實施例之方向相反之方向傾斜。即， 在該第一刻面94a處之一點越靠近該導光板93之後表面 97 ’則從該點至該導光板93之第二端表面95之距離越長。 一第二或下部刻面94b鄰接該第一刻面94a，並相對傾斜。 92979.doc •16· M265634 依據本創作’提供一種顯示器裝置 散反射顯示器面板之固m 、, u 〗用擴 一 •質上… 固編生，亚包括-前光，該前光將 貝、：勾之厚度與放鬆之品f要求組合 可調諳之照明均勻度。 杈仏 【圖式簡單說明】 已參考附圖對本創作作更詳細說明，其中： 圖1以—透視圖示意性顯示—先前技術之顯示器裝置，· 圖2以-透視圖示意性顯示依據本創作的顯示器裝置之 一項具體實垮例； 圖3係圖2之顯 圖；以及 不裔裝置之一部分之一放大的示意側視 圖4至9顯示依據本創作的顯示器裝置之進一步具體實施 【圖式代表符號說明】 10 顯示器裝置 11 顯示器面板 12 ' 光源 13 導光板 14 V光板之一第一較厚端 15 導光板之一第二較薄端 16 導光板之一前表面 η 導光板之一後表面 18 示意性的眼睛 20 顯示器裝置 92979.doc -17- 擴散反射顯示器面板 導光板 導光板之第一端 導光板之第二端 第一表面 後表面 楔形刻面 透明中間層 端表面 擴散反射顯示器面板 導光板 第一部分 第二部分 導光板之前表面 導光板之後表面 楔形刻面 透明中間層 擴散反射顯示器面板 導光板 楔形刻面 透明中間層/連接表面 擴散反射顯示器面板 導光板 連接表面之第一部分 -18- 透明中間層 擴散反射顯示器面板 光源 導光板 第一中間層 觸控螢幕 第二中間層 擴散反射顯示器面板 光源 導光板 第一端表面/光入口端表面 第二端表面 導光板之前表面 導光板之後表面 擴散反射顯示器面板 導光板 導光板之一端/第一端表面 第二端表面 導光板之前表面 導光板之後表面 楔形刻面 楔形刻面 楔形刻面 刻面之一第一端 -19- M265634 35b 刻面之一第一端 35c -刻面之一第一端 36a 刻面之一第二端 36b 刻面之一第二端 36c 刻面之一第二端 37a 連接表面 37b 連接表面 37c 連接表面 48a 連續楔形刻面之第一端 48b 前楔形刻面之第二端 51/61 顯示器面板 52/62 光源 53/63 導光板 58a 楔形刻面之第一端 58b 楔形刻面之第二端 59/69 中間層 84a 、 第一或上部刻面 84b 第二或下部刻面 94a 第一或上部刻面 94b 第二或下部刻面 92979.doc -20-M265634 新型 Description of the new type: [Technical field to which the new type belongs] This creation is generally about diffuse reflection displays, such as electrophoretic (E_ink) displays and Nanomats. Because of their physical characteristics, they are often referred to as incoming paper displays. [Prior Art] One of the reflective features at a low-level light level display requires a front light to illuminate the display. Conventional reflective displays, such as LCDs, require the illumination light to reach the display surface at an angle close to the display surface. Since the light source cannot be placed directly on the surface, it must be positioned to the side of the display. Therefore, a transparent light guide plate has been developed to position the light guide plate on the surface of the display (front) and light the light. Boot and redirect on the display. In order to obtain a good light distribution and direction, the light guide plate already has a microstructure, such as a sawtooth microstructure at its front surface. These microstructures must be of high quality, and the introduction of a highly diffusive reflective display for its manufacture relaxes the requirements for the front light guide plate because it allows the illumination light to reach the display surface at a large angle The display surface. This advantage has triggered the development of simple wedge-shaped light guides that are easy to manufacture. EP 1 220 015 shows such a wedge-shaped light guide plate, although for a reflective LCD, it has an additional reflector plate embedded in the display in order to simulate a more diffuse reflection feature, this feature makes it known It is possible to use a moulded light guide. However, these wedge-shaped light guide plates have some disadvantages. First, when a large display is required or a large mode: angle is required, such light guide plates will become thicker and heavier at the end facing the light source. .doc M265634 Unwanted Degree. In addition to thickness and weight issues, integration of the front light with other parts is prevented. Further—in the use of—a simple wedge can not adjust the uniformity of the illumination. [New content] The purpose of this creation is to provide a diffuse reflection display device that eliminates the shortcomings of light previously described above and provides a substantially uniform thickness and outgassing, quality requirements, and adjustable lighting The average sentence is combined with one light. This object is achieved by a display device such as the first item in the scope of patent application. 2 According to one aspect of this creation, a display device is provided, including:-a diffuse reflection display panel; _ front light, which includes a light guide plate 乂 and is disposed at the-end of the light guide plate and emitted through the first- Into the X guide, one of the light sources of the board; and a transparent intermediate layer, which is arranged between a front surface of the display panel and a rear surface of the light guide panel so that the display panel and the light guide panel Optical contact. The rear surface of the light guide plate has a microstructure including a wedge-shaped facet. The configuration of the wedge-shaped facets is such that, for each wedge-shaped facet, the -th edge of the wedge-shaped facet and the front surface of the display panel The distance is shorter than the distance between a second edge of one of the wedge-shaped facets and the front surface of the "Bebe State Panel", wherein the first edge is positioned closer to the light source than the second edge. "Pre-contact" is well known to those skilled in the art and is defined as the physical contact between different transparent materials, which causes Newton's%, zero-stripe or dark streaks. This occurs when there are sufficiently small differences in the refractive indices of these different materials. "Wedge-shaped facet" means that the light guide plate is inclined to the center plane of 92979.doc M265634 so that a part of the facet defining the light guide plate can be regarded as a wedge-facet. This will be exemplified thoroughly below. By forming a microstructure including a wedge-shaped facet on the surface or bottom of the light guide plate and optically connecting the microstructure to the display panel through the intermediate transparent layer, the light diffusion characteristics of the diffuse reflection display are advantageously used. Further, the optical quality of the microstructure need not be as high as when the microstructure is provided on the front or top of the light guide plate. In addition, the light guide plate as a whole need not be wedge-shaped, thereby eliminating the problem of the large-sized display described above. However, within the scope of this creation, if necessary, the front surface of the light guide plate and the front surface of the display panel can be made non-parallel. Another advantage of the display device of this creation is that the microstructure is not exposed to the surrounding environment. If it is exposed to the surrounding environment, the top portion will be easily affected by dust particles, smears, scratches, and the like. Further, the optical contact between the display and the ridge structure of the light guide plate reduces light scattering due to possible sharp edges, scratches, or other irregularities. Therefore, the optical contact results in a better overall display performance. In EP 1 220 015, a specific embodiment of a light guide plate having a toothed pattern on the rear surface of the light guide plate is indeed shown. However, this prior technical document is basically about LCD, and specifically about a modified change of _ Lcd (as mentioned above), which does not imply a combination of a simple structure and a diffuse reflection display. According to a specific embodiment of the display device, between the first end and a second end of the light guide plate (the second end is opposite to the first end), the wedges are continuously arranged along the rear surface of the light guide plate. Faceted. According to this specific implementation 92979.doc M265634 = conducive to _junju lighting-way to configure these wedge facets. Lai = a specific embodiment of the display device device, by-connecting the surface of the r :: shaped facet, the connecting surface and the display panel's side: "continue $ thousand. In other words, each connecting surface is far from the -wedge facet: the edge extends to the -edge of the -continuous wedge facet. Because the = surfaces are combined rather than parallel to the wedge facet orientations, there is no such surface. Therefore, only the wedge-shaped facets are used to perform the light direction conversion σ. Therefore, the finishing of such connecting surfaces will not even matter. Let's put it in a specific embodiment, by connecting the surface with adjacent wedge-shaped facets, the connecting surface is formed by a first portion parallel to the display surface, the rain surface, and the surface of the display panel. Bookmarking-Part 2 Group &. In this specific embodiment, = flat knife, the wedge-shaped facets are more distinguished from each other to a certain extent, and the distance between the wedge-shaped facets cannot be easily tuned in order to further improve the uniformity of the illumination. . = A specific embodiment of the display device, the at least one profiled facet varies with the distance of the first end of a child. This provides a further possibility for tuning the lighting. Two: According to a specific embodiment of the display device, the at least one wedge-shaped facet characteristic is selected from a wedge-shaped group consisting of a wedge-shaped angle, a distance between successive connection surfaces, and the wedge-shaped distance. In this specific example, the 'right-drying feature' may be used to refine the display on the display panel. For example, this specific embodiment has the ability to use the wedge-shaped engravings by changing these characteristics One of the faces is appropriately positioned and shaped 92979.doc M265634 to obtain the outward_synthetic-gradient. In a specific embodiment of the device, the at least one wedge-shaped facet feature 14 increases from the first end toward the second end. This specific embodiment defines one way to change the (etc.) characteristic. According to a specific embodiment of the display device, one of the end surfaces of the first end includes a non-vertical first notch of one front surface of the light board, or the end surface also includes one of the first notches adjacent to the first facet. Two facets, wherein the first and first facets form a v-shaped groove extending along the end surface. In these specific embodiments, the light population of the light guide plate is modified. Therefore, the specific embodiments provide an improvement for inward coupling of light into the light guide plate, and the improvement aims to facilitate uniform illumination. According to a specific embodiment of the display device, the intermediate layer is an adhesive. Since the adhesive is easy to manufacture and because the adhesive easily fills the cavity obtained by the microstructure in the light guide plate, it is advantageous to apply an adhesive between the light guide plate and the display panel in order to obtain the intermediate layer. . According to a specific embodiment of the display device, it further comprises a touch screen and a bright intermediate layer, and the second transparent intermediate layer is disposed between the touch screen and a front surface of the light guide plate so that the The touch screen optically contacts the light guide plate. This specific embodiment extends the creative concept for the basic display structure to a touch screen, that is, an active display, where input will be made on the display. This caused a significant improvement over the previous technology's touch screen contrast and other features. According to a specific embodiment of the display device, the second transparent intermediate layer has a refractive index lower than that of the first transparent intermediate layer. , 92979.doc -10- M265634 The relationship between the ranking and the refractive index of the first-middle layer prevents light vapor from the light source from leaking into the touch screen, and the light is only directed toward the display panel and outwards I horse together. [Embodiment] FIG. 1 shows a display device 10 of the prior art. It includes a display panel 11 and a front light composed of a light source 12 and a light guide plate 13. The display panel is a diffusive reflection type, and this type of display panel is described by reflected light extending over a large viewing angle. The light guide plate 13 is wedge-shaped so that the front surface 16 of the light guide plate is non-parallel to or inclined toward the rear surface 17 of one of the light guide plates. The rear surface faces the display panel. The light source is positioned at a first thicker end 14 of the light guide plate 13, and the thickness of the light guide plate 13 decreases as the distance from the light source increases until the first thinner end 15 of the light guide plate 13 ( It is opposite the first end 14). The light emitted from the light source enters the light guide plate 13 through the first end 14 and propagates along the light guide plate, as illustrated by the light in Fig. I. During the propagation, the light is alternately reflected by the front surface 16 and the rear surface 17 of the light guide plate 13. Due to the inclined front surface 16, for each reflection made by the front surface 16, the incident angle of the light toward the rear surface 17 increases. Finally, the incident angle exceeds an upper limit of total reflection, and the light or at least a part thereof is coupled out through the rear surface 17 and hits the display panel. The display panel 丨 丨 reflects the light in a relative distribution or expansion manner through the light guide plate and reflects it out into the surrounding air where an observer is. In the diagram, a schematic eye 18 To represent the observer. The interface (a thin intermediate layer) between the display panel 11 and the light guide plate 13 is air, which affects the outcoupling angle of 92979.doc -11-M265634 in an undesired manner. In the display according to the present invention, as shown in FIG. 2, the second embodiment of the second embodiment is a person. The benefit panel 21 and the light guide plate 23 are joined by an adhesive layer 29. The light guide plate 23 has a rear surface which has a microstructure of a wedge-shaped facet 28. The microstructure is explained further below. The interlayer 29 provides optical contact between the light plate 2 and the wedges 28) and the display panel 21. The adhesive 29 is preferably a liquid glue, which is easy and uniform to fill the The cavity of the microstructure does not leave any air trapped between the intermediate layer 29 and the rear surface 27 of the light guide plate 23. The light guide plate 23 has a general square shape, in which the front surface 26 of the guide plate 23 and the display panel. The front surface is parallel, and the geometric basic plane used for the rear surface 27 of the light guide plate 23 is also parallel to the front surface of the display panel 21, although in this embodiment, due to the wedge-shaped facets 28, A few surface portions of the rear surface 27 that lie in this plane in fact. The refractive index of the intermediate layer 29 should be lower than the refractive index of the material board. The refractive index of the intermediate layer 29 can be adjusted so as to promote uniform illumination, and generally, this will cause a refractive index substantially lower than the refractive index of the light guide plate 23. Therefore, this intermediate layer 29 is also referred to as a low refractive index layer. As shown in FIG. 2, an exemplary light introduced into the light guide plate 23 from the light source 22 at the first end 24 of the light guide plate is propagated through the light guide plate 23 and reflected. The wedge-shaped facet 28 at the rear surface 27 of the light guide plate 23 is inclined toward the first end. Because of the wedge-shaped facets 28, for each reflection facing away from a wedge-shaped facet 28, the incident angle toward the wedge-shaped facet 28 increases until the light exceeds the full reflection angle of 92979.doc -12-M265634. -In Fig. 3 'further put one of the parts of the light guide plate shown in Fig. 2-a large side view to show the microstructure. The wedge-shaped facets 34a, 34b, and 34c are arranged in series (i.e., continuously) between the first end 24 and the second end 25 of the light guide plate 23. Each wedge-shaped facet 34a to c is inclined such that a first end 35a to c of the facet 34a to c closest to the light source is located farther from the front than a first 钿 36a to b of the facet 34a to c. Surface% at a greater distance. Therefore, in a partial area of the light guide plate 23, the facets 34a to e provide a wedge-shaped facet to the 'light plate 23'. , Two adjacent wedge-shaped facets 34 & and 341) / 341) and 34 (; are connected by a connecting surface 37a to b, which is non-parallel to the front panel 26 of the display panel and to the guide One end surface 32 of the first end of the light plate 23 is not parallel. The end surface 32 is further perpendicular to the front surface%. Therefore, each second end 36 of a wedge-shaped facet 34aSc Similar to the connection surface, it is connected to one of the continuous wedge-shaped facets 34 to 0 adjacent to the first ends 35a to c. In this particular embodiment, the connection surfaces 37a to b are almost perpendicular to the wedge facets 34a to c, although they form a -pure angle 'with the wedge facets-to c. It is obvious from FIG. 3 that 'this action causes these connecting surfaces 3 and even b not to be included in the outward direction of the light'. Therefore, its shape and surface finishing are not important. Column h, which does not have to be flat and may be convex or concave. (If the shape facilitates the fabrication of the microstructure or enhances some characteristics of the microstructure). 1. FIG. 4 shows a specific embodiment of Dai-Xindi, one of the display devices. In this embodiment, the microstructure is different. More specifically, the wedge-shaped facets 48 at the rear surface of the light guide plate 43 are further mixed with each other. Female two adjacent wedges 92979.doc -13 · M265634 faceted facets 4 8 are connected by a distant drawing, when the surface is connected, and the connecting surface is formed by a different surface from the display panel 41 Non-flat and parallel. A part 44 of the brother who returns to the non-decade and a second part 45 that is parallel to the surface of the face of the display wave set 41. More specifically, in this specific implementation, for each connection surface, the fresh portion 44 is perpendicular to the front surface 46 of the light guide plate 43 and extends downward from the second end 48b of the front-wedge cut to the light guide plate 43. Geometric plane of the rear surface 47. The second portion 45 extends from the first portion 44 to the first end 48a of the continuous mold facet 48 in the geometric plane. The extensions of the second part ㈣ are about the same as the extensions of the building facets 48. Since the light source must be positioned at the end of the light guide plate, it is difficult to obtain uniform illumination of one of the display panels. According to this creation, the microstructure can be adjusted in a way to compensate for the different characteristics of the wedge-shaped facet installed on the side of the light source. The material quality can be adjusted according to the position of the individual wedge-cut surface and the wire. -The main factor is the distance from the individual wedge-shaped facet to the light source ', especially the distance measured in the direction of propagation of the light. The wedge facet characteristics of particular interest are the wedge angle, the wedge length, the distance between two consecutive connecting surfaces, and the wedge spacing. The wedge-shaped angle represents the inclination angle of the wedge-shaped facet relative to the geometric plane of the rear surface of the light guide plate, as indicated by a in FIG. 3. The wedge opening name M_spacing represents the vertical distance from the geometric plane to the second end of the wedge facet. According to the specific embodiments of the display device shown in FIG. 5 and FIG. 6, the basic parts, namely the light source 52/62, the light guide plate 53/63, the intermediate layer 59/69, and the display panel 51/61, Similar to the basic parts of the first specific embodiment, and the wedge angle increases with the distance from the light source 52 / 6292979.doc > 14. M265634 plus. In one third specific embodiment shown in FIG. 5, the microstructure is substantially equal to the microstructure of the first specific embodiment. However, when the angle of the profile is: Because the length of each wedge-shaped facet 58 is the same as the distance between the wedge-shaped facet% and the second ends 58a, 58b, the wedge-shaped distance also increases, And the size of these connecting surfaces 59 also increases. Further, the length between the two connection surfaces decreases with the distance from the light source 52. The inclination of these connecting surfaces 59 does not change. In one of the fourth specific examples shown in FIG. 6, the microstructure is basically similar to the microstructure of the second specific embodiment. Just now? The content of the third embodiment is also applicable to the fourth: specific embodiment. However, the variable dimensions of all the third phase dimensions W when the geometric plane of the surface behind the light guide plate is extended are limited to the variation of its -part 64. Of course, more than 4 ^ other characteristics adjustment combinations also cause the lighting or one of the other parameters to be improved. FIG. 7 shows a fifth embodiment of a display device of the present invention. This member has two bodies; ^ example includes a display panel 7 丨, including a light source and a front light of a light guide plate 73, the light guide plate is optically connected to the first intermediate layer 74 of the display panel 71, a touch The screen 75, and the touch screen 75 optically connected to the light guide plate is a second intermediate layer%. By selecting the refractive index of the first intermediate layer 76, the light guide plate 73, and the first intermediate layer%, the light will only be directed on the display panel side and not on the touch screen side. Xuanbei light out-coupling. If the refractive indices of the first intermediate layer 74, the second intermediate layer 76, and the V-plate 73 are ~, n2, and n3, respectively, the mutual relationship should be η2 < ηι < η3. Therefore, the second intermediate layer% should have the lowest fold. 92979.doc -15- M265634 The second light guide plate 73 should have the highest refractive index. Preferably, the refractive index of the first intermediate layer should be significantly higher than the refractive index of the second intermediate layer 76. For example, m is selected as the refractive index of the light guide plate and the second intermediate layer. -The intermediate layers 74 and 76 are preferably adhesives, such as UV-curable acrylic or heat-curable epoxy. In order to further improve the lighting characteristics, in one of the sixth item shown in FIG. 8 and the actuality is “—the first end surface 84 of the V front plate 83, that is, the light end surface of the light source 82. In other words, 'At least a part of the first-end surface 84: tilted so that it is not parallel to the opposite second end surface 85. Therefore, the front surface 86 of the two-knife / 忒 light guide plate 83 is not perpendicular. According to this sixth In a specific embodiment, there is a first or upper facet 84a and a second or lower facet 84b adjacent to one of the first facets 84a. The first and second facets 8 仏, b form a high beam entrance A v-shaped groove extending from the end surface 84 (that is, parallel to the central axis of the light source 82). The first and second facets 84a, 84b are approximately the same size, so that the bottom of the sub-groove is approximately located on the light guide plate. 83 before and between the rear surfaces 86 and 87. According to the seven specific embodiments, as shown in FIG. The front surface 96 extends toward the rear surface 97 of the light guide plate 93 and occupies a major portion of the first end surface 94. Specifically in this item In the embodiment, the first facet 94a is inclined in a direction opposite to the direction of the specific embodiment described previously. That is, the closer to a point at the first facet 94a is the rear surface 97 'of the light guide plate 93, The longer the distance from this point to the second end surface 95 of the light guide plate 93. A second or lower facet 94b abuts the first facet 94a and is relatively inclined. 92979.doc • 16 · M265634 According to this creation 'Provided A display device for diffuse reflection display panel solid m ,, u 〖Expanded one qualitatively ... solid weave, sub-included-front light, the front light will be bevel: the thickness of the hook and the relaxed product f required combination adjustable The uniformity of the lighting. [Simplified description of the drawing] The creation has been described in more detail with reference to the drawings, in which: Figure 1 is a perspective view schematically showing a prior art display device, and Figure 2 is a perspective view. The figure schematically shows a specific example of a display device according to the present invention; FIG. 3 is a diagram showing the display device of FIG. 2; Further concrete implementation of the device [Illustration of representative symbols of the drawings] 10 Display device 11 Display panel 12 'Light source 13 Light guide plate 14 One of the V light plate The first thicker end 15 One of the light guide plate The second thinner end 16 One of the light guide plate Front surface η Light guide plate One rear surface 18 schematic eye 20 display device 92979.doc -17- diffuse reflection display panel light guide plate first end light guide plate second end first surface rear surface wedge-shaped faceted transparent middle layer end surface diffusion Reflective display panel light guide plate first part second part light guide plate front surface light guide plate rear surface wedge-shaped faceted transparent intermediate layer diffuse reflection display panel light guide plate wedge-shaped faceted transparent intermediate layer / connection surface diffuse reflection display panel light guide plate connection surface first part -18- Transparent intermediate layer diffuse reflection display panel light guide plate first intermediate layer touch screen second intermediate layer diffuse reflection display panel light guide plate first end surface / light entrance end surface second end surface light guide plate front surface light guide plate Surface diffuse reflection display panel light guide plate One end of light guide plate / first end surface second end surface light guide plate front surface light guide plate rear surface wedge facet wedge facet one of wedge facet facet first end-19- M265634 35b one of facet first end 35c -One of the facets first end 36a facet one of the second ends 36b facet one of the second ends 36c facet one of the second ends 37a connecting surface 37b connecting surface 37c connecting surface 48a first end of the continuous wedge facet 48b Second end of front wedge facet 51/61 Display panel 52/62 Light source 53/63 Light guide plate 58a First end of wedge facet 58b Second end of wedge facet 59/69 Intermediate layer 84a, first or upper Facet 84b Second or lower facet 94a First or upper facet 94b Second or lower facet 92979.doc -20-